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Finding the Fourth Proportional to 80,683.75, 111,343.58 and 47,149.75

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Solution

The fourth proportional to 80,683.75, 111,343.58 and 47,149.75 is: 65,066.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,683.75 : 111,343.58 = 47,149.75 : x
  2. Step 2: Convert to fraction form
    80,683.75/111,343.58 = 47,149.75/x
  3. Step 3: Cross multiply
    80,683.75x = 111,343.58 × 47,149.75
  4. Step 4: Simplify right side
    80,683.75x = 5,249,821,961.11
  5. Step 5: Solve for x
    x = 5,249,821,961.11/80,683.75
  6. Step 6: Final answer
    x = 65,066.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.